Allison said: ‘Geraint went into the bathroom, into the bath, and began cleaning his backside.’

Soon after her boyfriend, from Pwllheli in North Wales, collapsed and appeared to be having a fit, later confirmed as a cardiac arrest.

When paramedics arrived they managed to bring him back around, but he had another heart attack in the ambulance which proved fatal.

Pathologist Dr Mark Lord said a post-mortem revealed an ‘area of haemorrhage and congestion in the rectum’.

Toxicology tests showed the presence of cocaine, a drug which can ‘easily be absorbed by the rectum,’ according to Dr Lord.

The inquest also heard Geraint was undergoing treatment for a drink problem and PTSD.

Coroner Dewi Pritchard Jones recorded a verdict of accidental death, caused by cocaine poisoning. ‘What appears to me to have happened is that the wrap of white powder had leaked into the soft tissue within his bottom and he died as a result of that,’ he said.